Incandescent-lamp socket.



APPLICATION FlLED JUNE 15. 9112 JACOB RIBAYSEN, F CliG-,

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IITCNDJESCENE-LAMF Application filed .Tune l5, 1916.

To all 'whom t may concern Be it known that l, JACOB Rinarsnn, a subject of the Czar of Russia, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Incandescent-Lamp Sockets, of which the following is -a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to improvements in incandescent lamp sockets, the object being to provide a simple and inexpensive means for connecting the cap to the shell of the socket.

A` further object is to provide a cap and shell of such construction that when the cap is placed over the shell in proper angular osition locki of the parts will be edected y simply forcing the cap downwardly on the shell, the locking means to be yieldable and adapted to snap together when in registration, and unlocking'y of the parts to be effected Iby a slight rotary movement of the cap after iirst withdrawing a locking means held in position by frictional contact. A. further object is to so arrange the locking devices that the same will be concealed from view or nearly so, a clean, neat appearance being of importance in a commercial article of this character.

Other objects will appear hereinafter.

With these objects in view my invention consists in the novel construction, combination and arrangement of parts all as will be described hereinafter, and more partien ularly pointed out in the appended claims.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in Whichi Figure l is a side elevation of a lamp socket embodying my invention;

Fig. 2 is an enlarged bottom plan view of the lamp socket cap;

Fig. 3 is an enlarged top plan view of `he socket shell;

Fig. 4f is an enlarged fragmentary eleva- ;ion showing locking devices on the soclret ;hell;

Fig. 5 is a vertical section taken on the yine 5-5 of Fig. l, showing a locking bolt amployed in the socket;

Fig. 6 is a detail transverse section taken n the line 6 6 of Fig. 5;

Fig. 7 is a vertical section taken on the Specification of Letters Z'atent.

Patented 7, MMS.,

Serial No. M3332.

line 7-7 of Fig. l showing the engagement of the yieldable loclting members employed in the cap and shell; and

Fig. 8 is a view .similar to F ig. 7, but showing the parts separated in order to illustrate more clearly the contour of the locking members.

The preferred form of construction for carrying my invention into eect comprises a shell l, a cap 2 and bushing 3, the latter being of conventional design. The shell l is provided with the usual beads 4 and 5, bead i serving as a stop for the lower edge of the cap 2, which is cylindrical in form as shown in Fig. Q. Arranged flush with a bead 6 in the cap 2 is va handle 7 which forms the upper extremity of a slidable locking bolt 8 capable of remaining in either locking or unlocking position by frictional contact with the lateral surfaces of inwardly bent teeth 9 struck up from the side of the cap 2, said teeth together forming a dovetail and said lateral surfaces engaging a dovetailed slot l0 formed in said bolt. .fin aperture ll is formed in the cap 2, or, in other words, a portion of the bead G. is cut away to forni clearance for the bolt 8, the latter being readily manipulated by the provision of the handle 'i'. The bolt 8 is normally in the position shown in Fig. 5 and is not disturbed when the cap is placed on the shell, but the lower end of said bolt serves a function in enabling the operator to iind a correct angular position of the cap before forcing the same on the shell, since if said end is entered in any one of a plurality of slots l2 formed in said shell, the cap will have a correct initial position. Seg-mental depressions 13 are formed in the shell l above the bead i to provide clearance for the bolt 8 in enteringl a slot l2, there being one of said slots in each depression, and the latter being extended' around the periphery of the shell a distance equal approximately to twice the length of a slot l2 in order that the cap 2 may have a slight rotation after the bolt 8 is withdrawn from the slot l2 in disengaging the cap. Depressione la are provided in the shell l intermediate the depressions 13 and extend a corresponding distance around 'the periphery of said shell. rEhe inner edge of the slots 12 are flush with the exterior surface of the depressions i3,- and said slots are arranged adjacent one end of said depressions as clearly shown. Stopped locking Q v necesi?" projections 15 are arranged in the depressions 14 and have a position therein corresponding with the slots 12 in the depressions 13. Each projection 15 is provided with shoulders 16 and 17 and an inclined face 18, as shown in Fig. 4. Teeth 19 and 20 are arranged in the cap 2 to engage shoulders 16 and 17, respectively, when snapped over the inclined faces 18 of projections 15, thus locking said cap on the shell 1. v

In order to remove the cap 2 from the shell 1, the bolt 8 is Withdrawn, as aforesaid, whereupon said cap is rotated for disengaging the teeth 19 and 20 with the projections 15, there being sufficient clearance in depressions 14 to perform this operation. No further resistance is odered to the removal of the` cap except the friction of the contiguous surfaces.

While 1 have illustrated and described the preferred form of construction for carryingl my invention into edect, this is capable of variations and modifications, without departing from the spirit of the invention. I therefore do not Wish to be limited to the precise details of construction but desire t0.

-avail myself of such variations and modifications as come Within the scope of the appended claims.

Having thus described my invention ywhat I claim as new and desire to secure by Letters Patent is;-

l. An incandescent lamp socket coniprising a shell and a cap, a segmental depression formed in said shell having an arcuate slot therein, a slidable bolt mounted in said cap and adapted to enter said slot, a projection formed on said shell, and a tooth in said cap adapted to register with and be forced over said projection for engaging the same, withdrawal of said bolt and turning of the cap disengaging said projection and tooth. v

Q. An incandescent lamp socket coinprising a shell and cap, a plurality of segmental depressions formed in said shell and each havin slidab e bolt mounted in said cap and adaptan arcuate slot therein, a vertically ed to enter any one of said slots, depressions in said shell intermediate said first named depressions, and a projection formed in cach, and teeth in said cap arranged to register with said projections and teeth being' yieldable and adapted to be forced into engagement, and said depressions forming clearances for turning of said cap for disen 'gagng said projections and teeth when said bolt is withdrawn.

25. An incandescent lamp socket comprising a shell and cap, a plurality of segmental depressions formed in said shell and each having an arcuate slot at one end thereof, a vertically slidable bolt mounted in said cap and adapted to enter any one of said slots, a plurality of segmental depressions arranged alternately with said first named depressions and a projection formed at one end of each, and teeth in said cap adapted to register with said projections and to be forced into engagement therewith, the other ends of said depressions forming clearances for rotating said. cap for disengaging said projections and teeth when said bolt is Withdrawn.

4e. n incandescent lamp socket compris ing a shell and cap, a plurality of segmental depressions in said shell and a projection at one end of each, a plurality of segmental depressions arranged alternately with said iirst named depressions and each having an arcuate slot .at one end thereof, there being an inclined face and a pair of stepped locking shoulders on each projection, a slidable bolt in said cap having frictional contact surfaces, means for limiting the movement ofnsaid bolt and the same being adapted to enter any one of said slots to prevent rotation of said cap, and a plurality of stepped teeth carried by said cap having inclined faces adapted to be forced over the faces of said projections and to engage said shoulders, the other ends of said depressions forming clearances for turning said cap for disengaging said teeth and shoulders when said bolt is disengaged from a slot.

1n Witness whereof, l have hereunto subscribed my name.

JACOB RlBAYSEN. 

